CN107941137A - Arbitrary angle drilling deformation measurement method - Google Patents

Arbitrary angle drilling deformation measurement method Download PDF

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Publication number
CN107941137A
CN107941137A CN201711088647.4A CN201711088647A CN107941137A CN 107941137 A CN107941137 A CN 107941137A CN 201711088647 A CN201711088647 A CN 201711088647A CN 107941137 A CN107941137 A CN 107941137A
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mrow
msub
probe
drilling
value
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CN107941137B (en
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尤志珑
崔爽
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

The invention discloses a kind of arbitrary angle drilling deformation measurement method, it first carries out the probe of clinograph into a middle empty shape housing made by deformable material, middle empty shape hull outside is equipped with the guiding draw runner of four evaginations, four resistance strain gages are adhesive with the inside of middle empty shape housing hollow, and are drawn by conducting wire；Then drill at any angle in ground body position construction to be measured, probe is fitted into inclinometer pipe and is detected, it is this each measuring point strain value that the strain value that each measuring point measures is subtracted corresponding first strain value, and the value of lateral displacement of each measuring point is calculated according to these strain values.The present invention can measure the lateral displacement of any angle drilling, greatly extend the application range of drilling displacement monitoring, there is important meaning to the monitoring method for improving geotechnical engineering.

Description

Arbitrary angle drilling deformation measurement method
Technical field
The present invention relates to the geotechnical engineerings such as the tunnel of traffic, water conservancy and hydropower, mine and urban construction, side slope and foundation pit.
Background technology
In geotechnical engineering, the deformation inside Rock And Soil must be often paid close attention to.For example, slope project and base pit engineering, lead to The deformation inside monitoring Rock And Soil and development trend are crossed, the stability of Rock And Soil can be judged and be predicted, is found in time Problem, is preventive from possible trouble.
The deformation method monitored inside Rock And Soil is very much, is mainly deep into by drilling inside Rock And Soil, using certain Displacement sensor is measured, but all there is certain limitation for these method for measurement.Such as：Using multiple spot inside country rock Displacement meter is measured, and can measure the relative displacement in a point and aperture in drilling, lacks the lateral displacement that cannot measure drilling.
Clinograph commonly used in the art at present is a kind of for measuring drilling, foundation pit, foundation, wall and dam body The apex angle of the engineering structures such as slope, azimuthal instrument.Generally it is made of probe, cable, data collecting instrument (readout instrument).Deviational survey Instrument is in use, firstly the need of pre-buried inclinometer pipe, by measuring the variable angle between inclinometer pipe axis and plumb line, so as to calculate Horizontal displacement of the soil body in different elevations.Although the deformation of drilling can be measured using clinograph, require drilling basic In position perpendicular to the ground, very big limitation is brought to practical application.
The content of the invention
The object of the present invention is to provide a kind of arbitrary angle drilling deformation measurement method, the horizontal stroke that any angle drills can be measured To displacement, the application range of drilling displacement monitoring is greatly extended, there is important meaning to the monitoring method for improving geotechnical engineering.
To reach above-mentioned purpose, the present invention adopts the technical scheme that：
A kind of arbitrary angle drilling deformation measurement method, it is characterised in that：
The first step：The probe of clinograph is improved
Improved probe is a middle empty shape housing made by deformable materials such as rubber, outside middle empty shape housing Side is equipped with the guiding draw runner of four evaginations, and 4 resistance strain gages are adhesive with the inside of middle empty shape housing hollow, and by conducting wire Draw；
Second step：Clinograph is installed
In the appropriate location of Rock And Soil to be measured according to existing drilling construction method construction drill, bore angle can be according to will Ask any selection；The inclinometer pipe with guide groove is installed in the borehole, is fitted into after probe is connected with connecting rod in inclinometer pipe, Guide groove of the guiding draw runner on the outside of probe in inclinometer pipe is slided, probe is determined in the borehole by the scale in connecting rod Position；
In order to ensure that guiding draw runner can be free to slide in the guide groove in inclinometer pipe, silicone oil is coated with guide groove.
The long grid-type resistance strain gage of BF350-10AA foil single shafts can be selected in above-mentioned resistance strain gage.
3rd step：The above-mentioned conducting wire for being adhesive with resistance strain gage probe is drawn to the measurement circuit of access clinograph, In order to improve accuracy in measurement, four resistance strain gages can be formed full-bridge circuit and be measured.After being adjusted to balance, from apart from aperture Interior 200mm starts, and a strain value is surveyed at interval of a distance using equidistant acquisition mode, and records measuring point period and corresponding Each first strain value；After undergoing a period of time, drilling deforms, and is measured again using same method.By this It is this each measuring point strain value that the strain value that each measuring point measures, which subtracts corresponding first strain value, is calculated according to these strain values Go out the value of lateral displacement of each measuring point, drilling hole transverse deformation pattern is drawn out by the value of lateral displacement of each measuring point：Specific method is as follows：
If the transversely deforming curve that drilling is produced along axis x directions is y (x), then drill cross section corner (i.e. slope) side Cheng YingweiCorner change rate should be：
If collection spacing is s, the first point close to aperture is labeled as i=0, and next coming in order are labeled as the n of i=1,2,3 ...；If the The corner change rate of i pointsFor ti, then tiDetermined by following formula：
In formula：The strain value of i-th point of upper and lower foil gauge is represented respectively；A for foil gauge away from center probe away from From.
Therefore, i-th point of cornerObtained by numerical integration method：
Here θ is set0=0
Similarly, i-th point of lateral displacement yiAlso by θiObtained using numerical integration method：
Here y is set0=0,
The lateral displacement of all measuring points is calculated according to the above method, finally, can be by scatterplot (i × s, yi) (i=1,2,3 ... N) drilling hole transverse deformation pattern is drawn.Whole calculating process can be written as software and is automatically performed by computer.
The positive effect of the present invention is：
The present invention by the probe designs for the deformeter that drills into the middle empty shape housing made by deformable materials such as rubber, in Empty shape hull outside is equipped with the guiding draw runner of four evaginations, when drilling deforms, due to being oriented to the effect of draw runner so that Probe can freely deform together with inclinometer pipe, and the corner that each measuring point is then calculated according to the strain value of each measuring point becomes Rate, the lateral displacement of each measuring point is calculated according to corner change rate, can so measure the lateral displacement of any angle drilling, greatly The application range of the earth extension drilling displacement monitoring, has the monitoring method for improving geotechnical engineering important meaning.
Brief description of the drawings
Fig. 1 is the structure chart of clinograph of the present invention, and the data collecting instrument outside inclinometer pipe and hole is eliminated in figure；
Fig. 2 is the schematic cross-section of A-A in Fig. 1 of the present invention；
Fig. 3 is exemplary application map；
Fig. 4 measures result map for application example.
Marginal data：Empty shape housing in 1-；2- resistance strain gages；3- inclinometer pipes；4- guide grooves；5- conducting wires；6- connections Bar；7- Chuan Mai tunnels；8-F1 tomographies；9- ore bodies；10- lower wall crushed zones；11- drills；The drilling deformation curve of 12-30 days；13- The drilling deformation curve of 60 days, first resistor foil gauge-ε1, second resistance foil gauge-ε2, 3rd resistor foil gauge-ε3, the 4th Resistance strain gage-ε4。
Embodiment
Below by taking certain gold mine is monitored the deformation inside Rock And Soil using the method for the present invention as an example further Illustrate technical scheme.
Certain gold mine ore body totally moves towards 62 °, is inclined to east southeast, and 46 ° of mean obliquity, orebody thickness is 15~20m, such as schemes Shown in 3.Disk ore-rock intersection is the interface zone of F1 tomographies 8 on ore body, and has fault gouge filling, and the lower wall of ore body nearby exists One is continuous, the crushed zone of uneven thickness.
To grasp the deformation dynamics of overlying rock, note abnormalities in time, accomplish to prevent trouble before it happens, it is perfectly safe, ensure ore deposit The production safety of well, it is necessary to grasped by monitoring measurement in upper disk rock mass, F1 tomographies, ore body, lower wall rock mass and lower wall rock mass Crushed zone between relative deformation state, employ the present invention drilling deformation measurement method measured, it is specific as follows：
The first step：The probe of clinograph is made into a middle empty shape housing made by deformable materials such as rubber 1, the middle outside of empty shape housing 1 is equipped with the guiding draw runner of four evaginations, and 2-4 is adhesive with the inside of middle 1 cavity of empty shape housing A resistance strain gage 2, is adhesive with four resistance strain gages in embodiment, is referred to as first to fourth resistance strain gage ε1、ε2、 ε3And ε4(see Fig. 2), four resistance strain gages are drawn by conducting wire 5；See Fig. 1
Second step：Clinograph is installed
Appropriate position construction drill 11 is selected in Chuan Mai tunnels 7, drilling is approximately perpendicular to ore body 9 and arranges, drilling is straight Footpath isLength is 65m.The inclinometer pipe 3 with guide groove 4 is installed in the borehole, and inclinometer pipe is selected's The special inclinometer pipe of PVC clinographs；It is fitted into after probe is connected with connecting rod 6 in inclinometer pipe 3, makes leading on the outside of probe It can be slided to draw runner in the guide groove 4 in inclinometer pipe 3, the position for determining to pop one's head in the borehole by the scale in connecting rod 6；See Fig. 2 and Fig. 3.
3rd step：After the inclinometer pipe of drilling installs and fixes, the conducting wire of the foil gauge in probe is drawn into access drilling and is surveyed The data collecting instrument of oblique instrument simultaneously is adjusted to balance, and is measured for the first time, since apart from aperture 200mm, surveys per 100mm and once strains Value, and acquisition and recording measuring point period and corresponding each strain value, these strain values are initial strain value, after undergoing a period of time, Due to mining activity, the phase between crushed zone 10 in upper disk rock mass, F1 tomographies 8, ore body 9, lower wall rock mass and lower wall rock mass To deformation so that drilling axis deforms, and is measured again using same method, obtains accordingly should for this each measuring point Variate.The strain value that this each measuring point measures is subtracted the calculating that corresponding first strain value is this each measuring point to strain Value.Then, adopt and calculated with the aforedescribed process, you can each point value of lateral displacement.And by scatterplot (i × s, yi) (i=1, 2nd, 3 ... n) draw drilling hole transverse deformation pattern.Whole calculating process can be written as software and is automatically performed by computer.Song in Fig. 4 Line 12 is the drilling axis deformation curve of 30 days after system installation, and curve 13 is the curve of 60 days.

Claims (4)

  1. A kind of deformation measurement method 1. arbitrary angle drills, it is characterised in that：
    The first step：The probe of clinograph is improved
    Improved probe is a middle empty shape housing made by deformable material, and middle empty shape hull outside is equipped with four The guiding draw runner of evagination, is adhesive with four resistance strain gages on the inside of middle empty shape housing hollow, and is drawn by conducting wire；
    Second step：Clinograph is installed；
    In ground body position construction drill to be measured, bore angle arbitrarily selects as requested；Install in the borehole with guiding The inclinometer pipe of groove, is fitted into inclinometer pipe after probe is connected with connecting rod, enables the guiding draw runner on the outside of probe in inclinometer pipe In guide groove slide, the position in the borehole of popping one's head in is determined by the scale in connecting rod；
    3rd step：The above-mentioned conducting wire for being adhesive with resistance strain gage probe is drawn to the measurement circuit of access clinograph, is adjusted to After balance, since the 200mm in aperture, a strain value is surveyed at interval of a distance using equidistant acquisition mode, and Record measuring point period and corresponding each first strain value；After undergoing a period of time, drilling deforms, using same method again It is secondary to be measured；It is that this each measuring point strains that the strain value that this each measuring point measures is subtracted corresponding first strain value Value, the value of lateral displacement of each measuring point is calculated according to these strain values, and drawing out drilling hole transverse by the value of lateral displacement of each measuring point becomes Shape figure：Specific method is as follows：
    If the transversely deforming curve that drilling is produced along axis x directions is y (x), then cross section corner (i.e. slope) equation that drills should ForCorner change rate should be：
    If collection spacing is s, the first point close to aperture is labeled as i=0, and next coming in order are labeled as the n of i=1,2,3 ...；If i-th point Corner change rateFor ti, then tiDetermined by following formula：
    <mrow> <msub> <mi>t</mi> <mi>i</mi> </msub> <mo>=</mo> <mfrac> <mrow> <msubsup> <mi>&amp;epsiv;</mi> <mi>i</mi> <mn>1</mn> </msubsup> <mo>-</mo> <msubsup> <mi>&amp;epsiv;</mi> <mi>i</mi> <mn>2</mn> </msubsup> </mrow> <mrow> <mn>2</mn> <mi>a</mi> </mrow> </mfrac> </mrow>
    In formula：The strain value of i-th point of upper and lower foil gauge is represented respectively；A is distance of the foil gauge away from center probe；
    Therefore, i-th point of cornerObtained by numerical integration method：
    <mrow> <msub> <mi>&amp;theta;</mi> <mi>i</mi> </msub> <mo>=</mo> <mi>s</mi> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>j</mi> <mo>=</mo> <mn>0</mn> </mrow> <mi>i</mi> </munderover> <msub> <mi>t</mi> <mi>j</mi> </msub> </mrow>
    Here θ is set0=0
    Similarly, i-th point of lateral displacement yiAlso by θiObtained using numerical integration method：
    <mrow> <msub> <mi>y</mi> <mi>i</mi> </msub> <mo>=</mo> <mi>s</mi> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>j</mi> <mo>=</mo> <mn>0</mn> </mrow> <mi>i</mi> </munderover> <msub> <mi>&amp;theta;</mi> <mi>j</mi> </msub> </mrow>
    Here y is set0=0,
    The lateral displacement of all measuring points is calculated according to the above method, finally, can be by scatterplot (i × s, yi) (n of i=1,2,3 ...) draw Drilling hole transverse deformation pattern.
  2. The deformation measurement method 2. arbitrary angle as claimed in claim 1 drills, it is characterised in that silicon is coated with guide groove Oil.
  3. The deformation measurement method 3. arbitrary angle as claimed in claim 1 drills, it is characterised in that the resistance strain gage is selected The long grid-type resistance strain gage of BF350-10AA foil single shafts.
  4. The deformation measurement method 4. arbitrary angle as claimed in claim 1 drills, it is characterised in that four resistance strain gage compositions Full-bridge circuit is measured.
CN201711088647.4A 2017-11-08 2017-11-08 Method for measuring deformation of drilling hole with any inclination angle Active CN107941137B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108801342A (en) * 2018-05-08 2018-11-13 中山大学 A kind of embedded Multi-parameter sensing measuring equipment
CN109914378A (en) * 2019-03-27 2019-06-21 中铁七局集团郑州工程有限公司 A kind of deeply mixing cement-soil pile distributed monitoring method of foundation pit enclosure structure
CN114252053A (en) * 2021-12-30 2022-03-29 中国矿业大学 Variable-length inclinometer probe

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Publication number Priority date Publication date Assignee Title
JPS59102110A (en) * 1982-12-06 1984-06-13 Kyowa Dengiyou:Kk Strain gage type inclinometer
CN1901418A (en) * 2006-07-21 2007-01-24 南京大学 Method and system for monitoring soil property side slope distributive fiber optic strain
CN101667324A (en) * 2008-09-03 2010-03-10 中国石油天然气股份有限公司 Method and system for monitoring and warning pipeline landslide and method for constructing system
CN102168950A (en) * 2010-12-20 2011-08-31 中铁隧道集团有限公司 Method of using distributed optical fibers for advanced monitoring of tunnel surrounding rock deformation
CN105890537A (en) * 2016-06-29 2016-08-24 四川大学 Distributed fiber optic sensing technology and system for monitoring of deformation of high arch dam
US20160363476A1 (en) * 2015-06-11 2016-12-15 Chase Innovations, LLC Electronic Weight Measuring Fishing Net
CN107101590A (en) * 2017-05-12 2017-08-29 中国科学院武汉岩土力学研究所 Tunnel wall rock deformation distributed optical fiber sensing method and device based on pipe shed support
CN107131836A (en) * 2017-06-01 2017-09-05 中国人民解放军理工大学 It is a kind of while landslide monitoring sensor and its application of the inside and outside displacement field of measurement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59102110A (en) * 1982-12-06 1984-06-13 Kyowa Dengiyou:Kk Strain gage type inclinometer
CN1901418A (en) * 2006-07-21 2007-01-24 南京大学 Method and system for monitoring soil property side slope distributive fiber optic strain
CN101667324A (en) * 2008-09-03 2010-03-10 中国石油天然气股份有限公司 Method and system for monitoring and warning pipeline landslide and method for constructing system
CN102168950A (en) * 2010-12-20 2011-08-31 中铁隧道集团有限公司 Method of using distributed optical fibers for advanced monitoring of tunnel surrounding rock deformation
US20160363476A1 (en) * 2015-06-11 2016-12-15 Chase Innovations, LLC Electronic Weight Measuring Fishing Net
CN105890537A (en) * 2016-06-29 2016-08-24 四川大学 Distributed fiber optic sensing technology and system for monitoring of deformation of high arch dam
CN107101590A (en) * 2017-05-12 2017-08-29 中国科学院武汉岩土力学研究所 Tunnel wall rock deformation distributed optical fiber sensing method and device based on pipe shed support
CN107131836A (en) * 2017-06-01 2017-09-05 中国人民解放军理工大学 It is a kind of while landslide monitoring sensor and its application of the inside and outside displacement field of measurement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108801342A (en) * 2018-05-08 2018-11-13 中山大学 A kind of embedded Multi-parameter sensing measuring equipment
CN109914378A (en) * 2019-03-27 2019-06-21 中铁七局集团郑州工程有限公司 A kind of deeply mixing cement-soil pile distributed monitoring method of foundation pit enclosure structure
CN109914378B (en) * 2019-03-27 2021-10-26 中铁七局集团郑州工程有限公司 Deep horizontal displacement distributed monitoring method for foundation pit support structure
CN114252053A (en) * 2021-12-30 2022-03-29 中国矿业大学 Variable-length inclinometer probe
CN114252053B (en) * 2021-12-30 2024-04-05 中国矿业大学 Length-variable inclinometer probe

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